fix

serve.go

@@ -0,0 +1,192 @@
+// Copyright 2014 The Gogs Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	//"container/list"
+	"fmt"
+	"os"
+	"os/exec"
+	"path"
+	"strconv"
+	"strings"
+
+	"github.com/codegangsta/cli"
+	qlog "github.com/qiniu/log"
+
+	//"github.com/gogits/git"
+	"github.com/gogits/gogs/models"
+	"github.com/gogits/gogs/modules/base"
+)
+
+var (
+	COMMANDS_READONLY = map[string]int{
+		"git-upload-pack":    models.AU_WRITABLE,
+		"git upload-pack":    models.AU_WRITABLE,
+		"git-upload-archive": models.AU_WRITABLE,
+	}
+
+	COMMANDS_WRITE = map[string]int{
+		"git-receive-pack": models.AU_READABLE,
+		"git receive-pack": models.AU_READABLE,
+	}
+)
+
+var CmdServ = cli.Command{
+	Name:  "serv",
+	Usage: "This command just should be called by ssh shell",
+	Description: `
+gogs serv provide access auth for repositories`,
+	Action: runServ,
+	Flags:  []cli.Flag{},
+}
+
+func newLogger(execDir string) {
+	logPath := execDir + "/log/serv.log"
+	os.MkdirAll(path.Dir(logPath), os.ModePerm)
+
+	f, err := os.OpenFile(logPath, os.O_WRONLY|os.O_APPEND|os.O_CREATE, os.ModePerm)
+	if err != nil {
+		qlog.Fatal(err)
+	}
+
+	qlog.SetOutput(f)
+	qlog.Info("Start logging serv...")
+}
+
+func parseCmd(cmd string) (string, string) {
+	ss := strings.SplitN(cmd, " ", 2)
+	if len(ss) != 2 {
+		return "", ""
+	}
+
+	verb, args := ss[0], ss[1]
+	if verb == "git" {
+		ss = strings.SplitN(args, " ", 2)
+		args = ss[1]
+		verb = fmt.Sprintf("%s %s", verb, ss[0])
+	}
+	return verb, args
+}
+
+func In(b string, sl map[string]int) bool {
+	_, e := sl[b]
+	return e
+}
+
+func runServ(k *cli.Context) {
+	execDir, _ := base.ExecDir()
+	newLogger(execDir)
+
+	base.NewConfigContext()
+	models.LoadModelsConfig()
+
+	if models.UseSQLite3 {
+		os.Chdir(execDir)
+	}
+
+	models.SetEngine()
+
+	keys := strings.Split(os.Args[2], "-")
+	if len(keys) != 2 {
+		println("auth file format error")
+		qlog.Fatal("auth file format error")
+	}
+
+	keyId, err := strconv.ParseInt(keys[1], 10, 64)
+	if err != nil {
+		println("auth file format error")
+		qlog.Fatal("auth file format error", err)
+	}
+	user, err := models.GetUserByKeyId(keyId)
+	if err != nil {
+		println("You have no right to access")
+		qlog.Fatalf("SSH visit error: %v", err)
+	}
+
+	cmd := os.Getenv("SSH_ORIGINAL_COMMAND")
+	if cmd == "" {
+		println("Hi", user.Name, "! You've successfully authenticated, but Gogs does not provide shell access.")
+		return
+	}
+
+	verb, args := parseCmd(cmd)
+	repoPath := strings.Trim(args, "'")
+	rr := strings.SplitN(repoPath, "/", 2)
+	if len(rr) != 2 {
+		println("Unavilable repository", args)
+		qlog.Fatalf("Unavilable repository %v", args)
+	}
+	repoUserName := rr[0]
+	repoName := rr[1]
+	if strings.HasSuffix(repoName, ".git") {
+		repoName = repoName[:len(repoName)-4]
+	}
+
+	isWrite := In(verb, COMMANDS_WRITE)
+	isRead := In(verb, COMMANDS_READONLY)
+
+	repoUser, err := models.GetUserByName(repoUserName)
+	if err != nil {
+		println("You have no right to access")
+		qlog.Fatal("Get user failed", err)
+	}
+
+	// access check
+	switch {
+	case isWrite:
+		has, err := models.HasAccess(user.LowerName, path.Join(repoUserName, repoName), models.AU_WRITABLE)
+		if err != nil {
+			println("Inernel error:", err)
+			qlog.Fatal(err)
+		} else if !has {
+			println("You have no right to write this repository")
+			qlog.Fatalf("User %s has no right to write repository %s", user.Name, repoPath)
+		}
+	case isRead:
+		repo, err := models.GetRepositoryByName(repoUser.Id, repoName)
+		if err != nil {
+			println("Get repository error:", err)
+			qlog.Fatal("Get repository error: " + err.Error())
+		}
+
+		if !repo.IsPrivate {
+			break
+		}
+
+		has, err := models.HasAccess(user.Name, repoPath, models.AU_READABLE)
+		if err != nil {
+			println("Inernel error")
+			qlog.Fatal(err)
+		}
+		if !has {
+			has, err = models.HasAccess(user.Name, repoPath, models.AU_WRITABLE)
+			if err != nil {
+				println("Inernel error")
+				qlog.Fatal(err)
+			}
+		}
+		if !has {
+			println("You have no right to access this repository")
+			qlog.Fatal("You have no right to access this repository")
+		}
+	default:
+		println("Unknown command")
+		qlog.Fatal("Unknown command")
+	}
+
+	models.SetRepoEnvs(user.Id, user.Name, repoName)
+
+	gitcmd := exec.Command(verb, repoPath)
+	gitcmd.Dir = base.RepoRootPath
+	gitcmd.Stdout = os.Stdout
+	gitcmd.Stdin = os.Stdin
+	gitcmd.Stderr = os.Stderr
+
+	if err = gitcmd.Run(); err != nil {
+		println("execute command error:", err.Error())
+		qlog.Fatal("execute command error: " + err.Error())
+	}
+}